4/9/2023 0 Comments Automatic transmission fluidTransmission fluid has one primary role: lubrication. In addition to knowing what it does and why it’s so important, you should understand how to know when to change the transmission fluid. Ignoring your transmission fluid can cause your transmission to slip or lead to wear and tear on the gears and other parts of your transmission. If you haven’t had your transmission fluid checked recently, you may not be getting it changed as often as you need - and that could spell trouble down the road. Similar examples may also be the effect of foam inhibitors or anti-wear effects of chemicals.Transmission fluid plays a vital role in keeping your car running, but it isn’t something most of us think about as often as oil changes, fluid top-offs or filling up with gas. The latter, in turn, affects the overall operation of the transmission. Disk material released due to increased wear reduces the capacity of the oil filter, resulting in a general pressure drop in the system. This in turn leads to greater wear on the clutch discs. This results in leaks in the transmission oil ducts and pressures reduce. The characteristics of the oil in the automatic transmission change over time, a proven and well-known fact and, as a result, reduce the lifetime of the transmission until it finally breaks.įor example, the loss of the ability to neutralize acids will first result in high precision guiding surfaces and seals. Even if one of them worsens, it will slowly pull down the other features. This means that all these properties must be above the minimum critical limit over the lifetime of the oil. With a lengthy use, the properties of both base oil and impurities change. Thus, oil (or technical fluid) is a high-tech product which properties are achieved by operating with high impurities and which has a wide range of functions.ĭepending on the product specification, 20-30% of this are impurities and 70-80% is base oil. to be demulsifiable (demulsibility), or to keep unfamiliar fluid in a non-dissolved state.While most additives add to the strength of the oil film, it is difficult to break the air bubbles, but it is critical. Foam inhibitor reduces oil foaming to ensure continuous and constant pressure on the lubrication system. Corrosion Inhibitors – chemical additives to prevent corrosion, which is usually caused by water, acids and other chemical impurities in the oil avoid corrosion of the internal surfaces of the transmission.Oxidation inhibitor neutralizing acids reduce the formation of corrosive compounds and mud formed by the combination of oxygen, heat and other contamination The oil must be able to withstand instant high temperatures above 300C. Thickeners and Viscosity Index Improvers – polymers that ensure that base oil does not become too fluid at high temperatures This is a prerequisite for the transmission to work flawlessly with -40° C Pour point depressants help reduce oil viscosity at low temperatures.
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